PEAR Manual
This manual is provided as a courtesy. It is not an official source. Please check pear.php.net for updated information.
To make PEAR work on Windows, you simple need to add the PEAR installation dir (e.g. c:\php\pear) to the include_path directive in your php.ini.
Note: There are some classes (like Schedule/At.php), that do not work on Windows, because they use *nix specific commands.